The Crystallization Kinetic of Te-Li Glass System

Aida Faeghinia, Roghaieh Nemati, and Mandana Sheikhani

Abstract—80mol% TeO2-20mol% LiF glass composition with 0.005 mole Gd2O3 and TbF3 was prepared by conventional casting technique. DTA analyses were carried out on the glass at different heating rates and an activation energy value of 129 kJ/mol for surface crystallization was determined graphically from a Kissinger-type plot and using the method of Ozawa and Augis-Bennett the activation energy values were 142 kJ/mol and 136 kJ/mol respectively.